But didn't he say that because Archer's bio included info about Shran that was contradicted by TATV? Not that Trek fandom ever had a problem disregarding TATV...

Canon works the opposite way around in TATV. Anything that violates canon established by TATV should be praised as much a regular canon violation would be condemned. For example, if the changes in nuKirk's uniform make you go to the shooting range to release your anger and disappointment, a TATV-era photo of Archer with the wrong insignia should make you send flowers to everyone you know.